A datastore is platform-independent and host-independent. Therefore, datastores do not change when the virtual machines they contain are moved between hosts.

How you would create and browse datastores depends on what VMware product you are using. For vSphere/ESXi, you can follow this guide.

The .vmx files are the primary configuration files for a virtual machine, and are plain text. You can view and edit them in any text editor. See this KB article for more information on the files associated with a VM.